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007c61fa RS |
1 | ;;; dos-fns.el --- MS-Dos specific functions. |
2 | ||
3aaa90ef | 3 | ;; Copyright (C) 1991, 1993 Free Software Foundation, Inc. |
007c61fa RS |
4 | |
5 | ;; Maintainer: Morten Welinder (terra@diku.dk) | |
6 | ;; Keywords: internal | |
7 | ||
8 | ;; This file is part of GNU Emacs. | |
9 | ||
10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
11 | ;; it under the terms of the GNU General Public License as published by | |
12 | ;; the Free Software Foundation; either version 2, or (at your option) | |
13 | ;; any later version. | |
14 | ||
15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
22 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
23 | ||
24 | ;;; Commentary: | |
25 | ||
26 | ;; Part of this code is taken from (or derived from) demacs. | |
27 | ||
28 | ;;; Code: | |
29 | ||
30 | (setq-default mode-line-format | |
31 | (list (purecopy "") | |
32 | 'mode-line-modified | |
33 | 'mode-line-buffer-identification | |
34 | (purecopy " ") | |
35 | 'global-mode-string | |
36 | (purecopy " %[(") | |
37 | (purecopy "%t:") | |
594cabd7 | 38 | 'mode-name 'mode-line-process 'minor-mode-alist "%n" |
007c61fa RS |
39 | (purecopy ")%]--") |
40 | (purecopy '(line-number-mode "L%l--")) | |
41 | (purecopy '(-3 . "%p")) | |
42 | (purecopy "-%-"))) | |
43 | ||
007c61fa RS |
44 | (defvar file-name-buffer-file-type-alist |
45 | '( | |
594cabd7 RS |
46 | ("[:/].*config.sys$" . nil) ; config.sys text |
47 | ("\\.elc$" . t) ; emacs stuff | |
48 | ("\\.\\(obj\\|exe\\|com\\|lib\\|sys\\|chk\\|out\\|bin\\|ico\\|pif\\)$" . t) | |
007c61fa | 49 | ; MS-Dos stuff |
594cabd7 | 50 | ("\\.\\(arc\\|zip\\|pak\\|lzh\\|zoo\\)$" . t) |
007c61fa | 51 | ; Packers |
594cabd7 | 52 | ("\\.\\(a\\|o\\|tar\\|z\\|gz\\|taz\\)$" . t) |
007c61fa | 53 | ; Unix stuff |
594cabd7 | 54 | ("\\.tp[ulpw]$" . t) |
007c61fa | 55 | ; Borland Pascal stuff |
594cabd7 | 56 | ("[:/]tags$" . t ) |
007c61fa | 57 | ; Emacs TAGS file |
594cabd7 RS |
58 | ) |
59 | "*Alist for distinguishing text files from binary files. | |
60 | Each element has the form (REGEXP . TYPE), where REGEXP is matched | |
61 | against the file name, and TYPE is nil for text, t for binary.") | |
007c61fa RS |
62 | |
63 | (defun find-buffer-file-type (filename) | |
64 | (let ((alist file-name-buffer-file-type-alist) | |
65 | (found nil) | |
66 | (code nil)) | |
67 | (let ((case-fold-search t)) | |
68 | (setq filename (file-name-sans-versions filename)) | |
69 | (while (and (not found) alist) | |
70 | (if (string-match (car (car alist)) filename) | |
71 | (setq code (cdr (car alist)) | |
72 | found t)) | |
73 | (setq alist (cdr alist)))) | |
594cabd7 RS |
74 | (if found |
75 | (cond((memq code '(nil t)) code) | |
007c61fa RS |
76 | ((and (symbolp code) (fboundp code)) |
77 | (funcall code filename))) | |
78 | default-buffer-file-type))) | |
79 | ||
80 | (defun find-file-binary (filename) | |
594cabd7 | 81 | "Visit file FILENAME and treat it as binary." |
007c61fa | 82 | (interactive "FFind file binary: ") |
594cabd7 | 83 | (let ((file-name-buffer-file-type-alist '(("" . t)))) |
007c61fa RS |
84 | (find-file filename))) |
85 | ||
86 | (defun find-file-text (filename) | |
594cabd7 | 87 | "Visit file FILENAME and treat it as a text file." |
007c61fa | 88 | (interactive "FFind file text: ") |
594cabd7 | 89 | (let ((file-name-buffer-file-type-alist '(("" . nil)))) |
007c61fa RS |
90 | (find-file filename))) |
91 | ||
92 | (defun find-file-not-found-set-buffer-file-type () | |
93 | (save-excursion | |
94 | (set-buffer (current-buffer)) | |
95 | (setq buffer-file-type (find-buffer-file-type (buffer-file-name)))) | |
96 | nil) | |
97 | ||
98 | ;;; To set the default file type on new files. | |
99 | (add-hook 'find-file-not-found-hooks 'find-file-not-found-set-buffer-file-type) | |
100 | ||
101 | ;;; We use the Emacs directory, not /usr/local | |
102 | (setq Info-default-directory-list (list "c:/emacs/info")) | |
103 | ||
104 | (defvar msdos-shells '("command.com" "4dos.com" "ndos.com") | |
105 | "*List of shells that use `/c' instead of `-c' and a backslashed command.") | |
106 | ||
107 | (defconst register-name-by-word-alist | |
108 | '((ax . 0) (bx . 1) (cx . 2) (dx . 3) (si . 4) (di . 5) | |
109 | (cflag . 6) (flags . 7))) | |
110 | ||
111 | (defconst register-name-by-byte-alist | |
112 | '((al . (0 . 0)) (ah . (0 . 1)) | |
113 | (bl . (1 . 0)) (bh . (1 . 1)) | |
114 | (cl . (2 . 0)) (ch . (2 . 1)) | |
115 | (dl . (3 . 0)) (dh . (3 . 1)))) | |
116 | ||
117 | (defun make-register () | |
118 | (make-vector 8 0)) | |
119 | ||
120 | (defun register-value (regs name) | |
121 | (let ((where (or (cdr (assoc name register-name-by-word-alist)) | |
122 | (cdr (assoc name register-name-by-byte-alist))))) | |
123 | (cond ((consp where) | |
124 | (let ((tem (aref regs (car where)))) | |
125 | (if (zerop (cdr where)) | |
126 | (% tem 256) | |
127 | (/ tem 256)))) | |
128 | ((numberp where) | |
129 | (aref regs where)) | |
130 | (t nil)))) | |
131 | ||
132 | (defun set-register-value (regs name value) | |
133 | (and (numberp value) | |
134 | (> value 0) | |
135 | (let ((where (or (cdr (assoc name register-name-by-word-alist)) | |
136 | (cdr (assoc name register-name-by-byte-alist))))) | |
137 | (cond ((consp where) | |
138 | (setq value (% value 256)) ; 0x100 | |
139 | (let* ((tem (aref regs (car where))) | |
140 | (l (% tem 256)) | |
141 | (h (/ tem 256))) | |
142 | (if (zerop (cdr where)) | |
143 | (aset regs (car where) (+ (* h 256) value)) | |
144 | (aset regs (car where) (+ (* value 256) h))))) | |
145 | ((numberp where) | |
146 | (setq value (% value 65536)) ; 0x10000 | |
147 | (aset regs where value))))) | |
148 | regs) | |
149 | ||
150 | (defsubst intdos (regs) | |
151 | (int86 33 regs)) | |
152 | ||
153 | ;;; Fix interface to (X-specific) mouse.el | |
154 | (defalias 'window-frame 'ignore) | |
155 | (defalias 'x-set-selection 'ignore) | |
156 | (fset 'x-get-selection '(lambda (&rest rest) "")) | |
157 | (fset 'frame-parameters 'ignore) | |
158 | (fmakunbound 'font-menu-add-default) | |
159 | (global-unset-key [C-down-mouse-1]) | |
160 | (global-unset-key [C-down-mouse-2]) | |
161 | (global-unset-key [C-down-mouse-3]) |